15.7.2.1. Computation of Mean, Median, Mode

Try these first

1. 1.

   Calculate the mean of the following rainfall data: 5 mm, 10 mm, 20 mm.

   Hint

   Add all the measurements and divide by how many there are.

2. 2.

   What is the mode of the data set: 5 mm, 5 mm, 10 mm, 20 mm?

   Hint

   Look for the value that appears more than once.

3. 3.

   What does the mean represent in a dataset?

   • The average
   • The middle value
   • The most frequent value

   Hint

   Think about how different values contribute to an overall average.

4. 4.

   True or False: The median is less affected by outliers than the mean.

   • True
   • False

   Hint

   Why would that be important in analyzing data?

5. 5.

   You have rainfall data recorded in inches: 1, 2, 2, 2, 3, 4, 100. Calculate the mean, median, and mode.

   Hint

   Consider how the outlier, 100, affects your calculations.

6. 6.

   Analyze a dataset: 5 mm, 10 mm, 15 mm, 20 mm, and 90 mm. How do mean and median compare, and what does this tell you?

   Hint

   Ask yourself how extreme values shape the perception of average rainfall.